convincing

conclusive

kənˈkluːsɪv

adjective

(of evidence or argument) having or likely to have the effect of proving a case; decisive.

conclusive evidence

incontrovertible,incontestable,irrefutable,unquestionable,undeniable,indisputable,unassailable,beyond dispute,beyond question,beyond doubt,beyond a shadow of a doubt,certain,decisive,convincing,clinching,definitive,definite,positive,final,ultimate,categorical,demonstrative,unequivocal,unarguable,unanswerable,uncontroversial,airtight,watertight

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cogent

ˈkəʊdʒ(ə)nt

adjective

(of an argument or case) clear, logical, and convincing.

they put forward cogent arguments for British membership

convincing,compelling,strong,forceful,powerful,potent,weighty,valid,sound,well founded,plausible,effective,efficacious,telling,impressive,persuasive,irresistible,eloquent,credible,influential,conclusive,unanswerable,authoritative,logical,reasoned,well reasoned,rational,reasonable,lucid,coherent,well organized,systematic,orderly,methodical,clear,articulate,consistent,relevant

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believable

/bəˈlivəb(ə)l/

adjective

(of an account or the person relating it) able to be believed; credible.

she felt that Dawn’s story was not quite believable

credible,plausible,likely,convincing,creditable,probable,possible,feasible,tenable,acceptable,reasonable,sound,rational,logical,within the bounds of possibility,able to hold water,with a ring of truth

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